Merge "fs_mgr: overlay check shared blocks for / if /system is not" (3569a881) · Commits · e / os / android_system_core

fs_mgr/fs_mgr_overlayfs.cpp

+3 −0

Original line number	Diff line number	Diff line
		@@ -159,6 +159,9 @@ bool fs_mgr_overlayfs_enabled(FstabEntry* entry) {
		auto save_errno = errno;
		errno = 0;
		auto has_shared_blocks = fs_mgr_has_shared_blocks(entry->mount_point, entry->blk_device);
		if (!has_shared_blocks && (entry->mount_point == "/system")) {
		has_shared_blocks = fs_mgr_has_shared_blocks("/", entry->blk_device);
		}
		// special case for first stage init for system as root (taimen)
		if (!has_shared_blocks && (errno == ENOENT) && (entry->blk_device == "/dev/root")) {
		has_shared_blocks = true;

+5 −9

Original line number	Diff line number	Diff line
		@@ -371,17 +371,13 @@ int main(int argc, char* argv[]) {
		continue;
		}
		}
		PLOG(WARNING) << "failed to remount partition dev:" << blk_device << " mnt:" << mount_point;
		// If errno = EROFS at this point, we are dealing with r/o
		PLOG(ERROR) << "failed to remount partition dev:" << blk_device << " mnt:" << mount_point;
		// If errno is EROFS at this point, we are dealing with r/o
		// filesystem types like squashfs, erofs or ext4 dedupe. We will
		// consider such a device that does not have CONFIG_OVERLAY_FS
		// in the kernel as a misconfigured; except for ext4 dedupe.
		if ((errno == EROFS) && can_reboot) {
		const std::vector<std::string> msg = {"--fsck_unshare_blocks"};
		std::string err;
		if (write_bootloader_message(msg, &err)) reboot(true);
		LOG(ERROR) << "Failed to set bootloader message: " << err;
		errno = EROFS;
		// in the kernel as a misconfigured.
		if (errno == EROFS) {
		LOG(ERROR) << "Consider providing all the dependencies to enable overlayfs";
		}
		retval = REMOUNT_FAILED;
		}